CBS A gun company advertisement that warns of impending gun control compares President Obama to Adolf Hitler and Joseph Stalin.

The USAAmmo ad shows side-by-side pictures of Obama with Hitler, Stalin and other dictators who committed atrocities across the world. The ad, which is also accompanied by a video, warns that gun control is imminent and foreshadows that the U.S. could face millions in casualties if they are not allowed to defend themselves.

USAAmmo states that “tyranny is knocking down the doors of American cities daily” and that Obama, Attorney General Eric Holder and other gun control advocates “are secretly conspiring to strip American Citizens of the right to bear arms.”

People have natural rights to own guns; citizens have mere privileges

Trace Williams, director of operations for USAAmmo, defended the ad that was emailed Monday. He told CBS Washington that “Obama and his various czars are infringing on the rights of Americans to own guns.”

“He’s anti-gun and he’s obviously a socialist cramming health care down American’s throats,” Williams said. “That is exactly how those people in that ad rose to power.”

Williams told CBS Washington that he doesn’t regret comparing Obama to those dictators and that his company has received “unbelievable support” since the ad was put out.

“Just look at history. Obama’s socialist agenda is geared toward depriving American citizens of their God-given rights.” He also added that sales have gone “through the roof.”

Obama promised stricter gun control laws following the January Tucson shooting where Rep. Gabby Giffords was seriously injured and six others were killed.